17413-1838 DON 858

 
 
17h 41m 18.92s -18 38' 28.2" P.A. 265 sep 1.9 mag 9.25,15.20 Sp Ap
 
 
Coord 2000
17413-1838
Discov num
DON 858
Comp
Coord arcsec 2000
17 41 18.92 -18 38 28.2
Date first
1932
Date last
1940
Obs
3
Pa first
263
Pa last
265
P.A. Now (θ)
265°
Sep first
1.8
Sep last
1.9
Sep. Now (ρ)
1.9"
Mag pri
9.25
Mag sec
15.20
delta mag (ΔM)
5.95
Spectral class
Ap (white)
Pri motion ra
-008
Sec motion ra
Pri motion dec
-010
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
264.6
Precise sep
1.94
Constellation
Ophiuchus
SAO
160745
Tycho2
6252-00149-1
HD
160544
last precise pa
264.6
last precise sep
1.94
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17413-1838 DON 858 1940 3 265 1.9 9.25 15.20 Ap 174118.92-183828.2

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